Network Security Services (NSS) is a set of libraries designed to
support cross-platform development of security-enabled server
applications. Applications built with NSS can support SSL v3,
TLS v1.0, v1.1, v1.2, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3
certificates, and other security standards.